Winner: Hotel and short-stay interior of the year 2021 Klein Dytham's Toggle Hotel features colourful two-tone rooms designed to uplift visitors staying in the predominantly grey urban fabric of central Tokyo.

Its triangular site is bound on one side by the elevated Metropolitan Expressway and the Chuo Line railway tracks on the other.

Responding to its grey monochrome setting, the architecture and design is all about movement and colour, a reflection of the city's energy and vitality.

Within its striking yellow and grey exterior, inspired by graphic patterns of the expressway, floors of two-tone rooms burst into 12 vibrant colours and six contrasting colour combinations.

Judges' comments: This interior has a very interesting cultural mix up with a highly graphic approach. The clever use of colour helps cover up services while enhancing the interior. Impactful and brave, creating interest out of simplicity.

Architect: Klein Dytham Architecture
Project: Toggle Hotel